Button(s) on release page to filter prereleases: `no-prereleases`

### Description

GitHub has hidden search filters for prereleases. Compare:

- https://github.com/PSP-Archive/ARK-4/releases?q=prerelease%3Afalse
- https://github.com/PSP-Archive/ARK-4/releases?q=prerelease%3Atrue

It would be nice to have filter buttons on that page.

### Example URLs

https://github.com/PSP-Archive/ARK-4/releases